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Session Initiation Protocol (SIP) Extension for Instant Messaging (RFC3428)

IP.com Disclosure Number: IPCOM000010464D
Original Publication Date: 2002-Dec-01
Included in the Prior Art Database: 2002-Dec-05
Document File: 19 page(s) / 41K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Campbell: AUTHOR [+6]

Abstract

Instant Messaging (IM) refers to the transfer of messages between users in near real-time. These messages are usually, but not required to be, short. IMs are often used in a conversational mode, that is, the transfer of messages back and forth is fast enough for participants to maintain an interactive conversation.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 6% of the total text.

Network Working Group                                   B. Campbell, Ed.

Request for Comments: 3428                                  J. Rosenberg

Category: Standards Track                                    dynamicsoft

                                                          H. Schulzrinne

                                                     Columbia University

                                                              C. Huitema

                                                                D. Gurle

                                                   Microsoft Corporation

                                                           December 2002

   Session Initiation Protocol (SIP) Extension for Instant Messaging

Status of this Memo

   This document specifies an Internet standards track protocol for the

   Internet community, and requests discussion and suggestions for

   improvements.  Please refer to the current edition of the "Internet

   Official Protocol Standards" (STD 1) for the standardization state

   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   Instant Messaging (IM) refers to the transfer of messages between

   users in near real-time.  These messages are usually, but not

   required to be, short.  IMs are often used in a conversational mode,

   that is, the transfer of messages back and forth is fast enough for

   participants to maintain an interactive conversation.

   This document proposes the MESSAGE method, an extension to the

   Session Initiation Protocol (SIP) that allows the transfer of Instant

   Messages.  Since the MESSAGE request is an extension to SIP, it

   inherits all the request routing and security features of that

   protocol.  MESSAGE requests carry the content in the form of MIME

   body parts.  MESSAGE requests do not themselves initiate a SIP

   dialog; under normal usage each Instant Message stands alone, much

   like pager messages.  MESSAGE requests may be sent in the context of

   a dialog initiated by some other SIP request.

Campbell, et. al.           Standards Track                     [Page 1]

RFC 3428                 SIP Message Extension             December 2002

Terminology

   In this document, the key words "MUST", "MUST NOT", "REQUIRED",

   "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT

   RECOMMENDED", "MAY" and "OPTIONAL" are to be interpreted as de...